AutoCodes – Chevrolet – U2608 Chevrolet

U2608 Chevrolet Code - Electric A/C Compressor Control Module Lost Communication With Hybrid/EV Powertrain Control Module

Quick Answer

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Hybrid/EV Powertrain Control Module, Hybrid/EV Powertrain Control Module harness is open or shorted, Hybrid/EV Powertrain Control Module circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: U2608 Chevrolet indicates Electric A/C Compressor Control Module Lost Communication With Hybrid/EV Powertrain Control Module.
Common causes: Common causes include Faulty Hybrid/EV Powertrain Control Module, Hybrid/EV Powertrain Control Module harness is open or shorted, Hybrid/EV Powertrain Control Module circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 1,114

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 18, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U2608 Chevrolet Description

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the devices. The devices have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver device as an availability indication of the transmitter device. Each message contains the identification number of the transmitter device.
This diagnostic is used to check the loss of communication with the Hybrid/EV Powertrain Control Module on a high-speed General Motors Local Area Network (GMLAN) bus. The Battery Energy Control Module supervises a periodic serial data message to check the communication status of the Hybrid/EV Powertrain Control Module. If this message is not received within 400 ms, the Battery Energy Control Module increases its fail count. When this fail count is over X Cal Value (7) during Y Cal Value (10 samples), the diagnostic status of this code is set to Failed and transmitted over high voltage energy high-speed GMLAN bus to the Hybrid/EV Powertrain Control Module.
The Diagnostic Trouble Code (DTC) will set when a supervised periodic message that includes the transmitter device availability has not been received within 400 ms.

OBDII Code U2608 Chevrolet - Electric A/C Compressor Control Module Lost Communication With Hybrid/EV Powertrain Control Module - AutoCodes.com — U2608 Chevrolet Code - Electric A/C Compressor Control Module Lost Communication With Hybrid/EV Powertrain Control Module

What does this mean?

What are the Possible Causes of the DTC U2608 Chevrolet?

Faulty Hybrid/EV Powertrain Control Module
Hybrid/EV Powertrain Control Module harness is open or shorted
Hybrid/EV Powertrain Control Module circuit poor electrical connection
Faulty Electric A/C Compressor Control Module

How to Fix the DTC U2608 Chevrolet?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U2608 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Need Help with the Code?

Get the U2608 Chevrolet code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U2608 Chevrolet Code

1. What are common symptoms of the OBDII code U2608 in a Chevrolet related to the Electric A/C Compressor Control Module?

- Common symptoms include loss of air conditioning function, irregular cooling performance, and potential illumination of the check engine light.

2. What are possible causes for the U2608 code indicating Electric A/C Compressor Control Module communication loss with the Hybrid/EV Powertrain Control Module in a Chevrolet?

- Potential causes may include faulty wiring or connectors, a malfunctioning A/C compressor control module, issues with the hybrid/EV powertrain control module, or software communication errors.

3. How can I diagnose the U2608 code in a Chevrolet related to the Electric A/C Compressor Control Module communication issue?

- Diagnosis typically involves using a diagnostic scanner to retrieve the trouble codes, checking the system for any visible damage or loose connections, and performing communication tests between the modules.

4. Are there any specific repair tips for addressing the U2608 code in a Chevrolet with Electric A/C Compressor Control Module communication problems?

- Repair tips may include inspecting and repairing any damaged wiring or connectors, checking and replacing the A/C compressor control module if necessary, and ensuring that software updates are applied as recommended by Chevrolet.

5. Can the U2608 code related to the Electric A/C Compressor Control Module communication be fixed without professional help?

- While some basic troubleshooting steps can be taken by DIY enthusiasts, resolving the U2608 code may require specialized diagnostic tools and expertise, making it advisable to seek professional assistance.

6. Is it safe to continue driving a Chevrolet with the U2608 code indicating Electric A/C Compressor Control Module communication issues?

- It is generally not recommended to drive the vehicle with unresolved communication problems between critical modules like the A/C compressor control module and powertrain control module as it may lead to further issues.

7. How much can I expect to pay to repair the U2608 code in a Chevrolet related to the Electric A/C Compressor Control Module?

- Repair costs for the U2608 code can vary depending on the exact cause of the issue, but they may range from a few hundred to over a thousand dollars, including parts and labor.

8. Are there any recalls or technical service bulletins related to the U2608 code in Chevrolet vehicles with Electric A/C Compressor Control Module issues?

- It is advisable to check with authorized Chevrolet dealerships or visit the manufacturer's website to see if there are any relevant recalls or technical service bulletins addressing the U2608 code specifically.